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1·Renew brake rim because of excessive wear.

更换磨损严重的刹车鼓。

2·The principle and method for testing brake character, travelling speed, break out force and rim pull are described.

并论述了制动性能、车速、掘起力、牵引力试验台的检测原理和方法。

3·The rim, spoke and the brake hub are cast into a whole; the spoke takes a shape of an arc on the whole.

所述的轮辋、辐条及刹车毂铸造成一个整体，所述辐条整体呈弧形。